And rolanb heimbecker



C. G. DE LAVAL AND R. HEIMBECKER.

COMPOUND METER. APPLICATION FILED MAY 14, 1915. RENEWED DEC. 27.1911.

' Patented Oct. 21, 1919.

CARL GEORGE nn LAVAL, OF EAST ORANGE, N EW J ERSEY,

or NEW YORK, 1v. (Y, ASSIGNORS NEW JERSEY. a

annfnotmvn H'EIMBEGKER,

o Halter a. woarnnverou, a coaromrron or 1 COMPOUND METER.

1,319,380. Application filed May 14, 1915, Serial No. 27,993.

1T0 all'whomitmailconcern: Y

Be it known that we, CARL GEORGE on invented new and useful :Improvements in Compound Meters, fullydescribed and represented in: the following specification and the accompanying drawings, forming a part of the same. a

the other for relatively large flows or high duty, with valve mechanism operated'b-y fluid pressure to change the flow from one 7 to the other of themeteringv devices.

Among the special objects of the invention are to provide a construction by which the metering of the fluid that passes during the action of the change-valve mechanism shall be assured, and toavoidshock on the movement' of the changevalve on increase of pressure.

For a full understanding of the invention detailed description of a construction embodying the same in its preferred form will now be given inconnection with the accom panying drawing forming a part of this 7 specification, and the features forming the invention then specifically pointedout in'the claims. f i In the drawing:

Figure 1 is a central section through the compound meter showing the partsiin'ihormal low duty position. i

' 1 Fig. 2 is a similar partial view showing an intermediate positiono'f the change-valve in shifting from low duty to high duty or v1cevers. f

Referring to the drawing, A is the meter casing having inlet B and outlet C. The

A highduty meter is shown as a turbine meter D of substantially the same construction as shown in United Statespatent to Sims, No. 1,133,408, dated March 30th, 1915, this turbine meter having the delivery volute E and registering mechanism F." The" turbine meterD is shown as in the path of the fluid Specification otnettrs Patent. p f nfd t, 21, 1919 Renewed December 27, 191 7. Seria1No.209,155.-

entering inlet '13, the water from the inlet passing from the inlet above and below the being stopped and directed upward through the turbine wheel by partition 10, while the :chamber above the turbine wheelis opento the low duty meter. The low duty meterG screen 11, cylinder 12, and under the confrom; the disk meter G through port 13. p 1

Referring now tothechange-valve mechanism, the change-valvelI-is a piston valve to the outlet l a turbine wheel, and the flow below the wheel i p trol of change-valve I, and the fluid passin The object of the invention is to provide a simple and efiicient meter of the compound type, that is, provided with'two metering 1 devices, onefor small flows'or low duty, and

moving in the cylinder 12, shown as asepa- 1 rate cylinder within the casing wall, and preferably being of heavy bronze to avoid distortion, the fluid from the turbine meter D-passing through volute E and passage 14 to the under open side of the cylinder 12 and Y bottom of the valve I, so thatsubstantially the full area of the valve I is exposed to vthe fluid pressure, "and the valve I being properly weighted to securethe action desired. The cylinder 12 has ports 1, 2 in its side walls through which the fluid passes to the low duty meter in normal'low duty oper- 'ation, port 1 communicating with annular passage 4 extending around the change-- valve I and from this passage through slde passage 5*and central passage '6 in the change-valve to the cylinder12abovevalve I, and thence through'spider 15 'on thetop of the cylinder to the disk meter. The fluid passes through port 2 directly to the cylinder above the change-valve I and thus to the disk meter. The cylinder 12, also, has ports 7 closed by the valve I in low duty "operation, and connecting the cylinder and passage 14 with the outlet 0 on hlgh duty operation, these ports being of the full capaci ty of the meter pipe. The port 2is used "to secure the lap of the flows to the two 'meters on' shiftingffrom one meter to the other, as hereafter described, and obviously is-not required if the change of meter is to be made without this lap of the flows; The spider 15 not only forms a stop for the valveI in its extreme upper or high duty position, but also carries central plunger 16,

in line with the central passage 6 of the change-valve, this plunger having a small port 8 forming an outlet for the fluid in Ed n the normalloperation of :the construc- 'ft1on,:inametering small flows orionslow duty,

;the 1 fluid passes, ttrom the inlet B. through andtover high' duty meter D, withoutoperating the latter; to ports 1,12, and through {the ehange-valvdandcyliiider"l2 tothe low ld'utyl-meter:G,-and;thr0ugh port 13 to-outlet ,C, :such .smallifiow abeing iregistered: by the glow duty. meterG. 'When the flow and pres sure a of the :fluid increase sufiiciently I so :that

.thezpressure: on the. bottom of valvelI raises Ethe latter, lthe ivalvezl'in moving. :upward first closes port 1 and at the ESELIIIG xtime=opens iports 7 @port :1" thus; being :zelosed when the .ports. 71 are onlyapartiallyopen-or just'beginning. to open,.-'but ithe (port "2 remaining open after port. 1 is closed,rso :that .the :fiow :to the-low duty meter G 'jtflkSnPlflC :through port 2 after -ports 7 are partially open and operatinglflow through the hi h duty meter Dise'cured. lOnthe'lclosing 0 'portl, and 1before ponts 7 are fully open, 'thelupper menthofzcentral passage "6 in ehange-valve I passes over piston -16, thus closing this passage 6 and v preventing :theiesoapeof; fluid therefrom except throughnsmall port 8. This I movement oflthe uc-hange 'v'allve passing over piston -16 throttles the-r-flowrand;actsas =1 avdash pot which retards the further upward movement of. the valve' 1 and secures an easy :slowl upward: movement until the valve is'stoppedby spider 15. ,1 The :position of the 1 parts, with .the change-valve partially shifted, to close portl and; commencing to open :ports .7, and with the :dash pot just coming into action and the port.2 still-ope n, .dSpShOWIlrlIl Fig- 2.

(The high duty I meter-JD, with (its registering mechanism 1 F, isJ-just starting. action, and low duty meter. G with its registering fiow througlnport2.

lnithefurther upward movement :of 1the change-valve 1,? the; high duty ipor-ts 7 are i'ully opened, and the Tport 2 closed,+this .port' 2,.-.however,' remaining open suntil ithe hig'hlduty meter-isin .full operation. Mlhen .the flew: r nd )pressure are ;redt1eed,: so that the pressure .is not sufficient ,,to1 "hold the valvejl ;-raised, the valve Halls by its weight,

gand inllits fallinganovement' opens,,port ,2

duty ports 7 and stopsthe high duty meter mechanism 1H, 1 is still being. operated e by the r before ports. 7 are closed, as shown in Fig. 2, so that the low duty meter G- is in oper ation with high duty meter D 'for a time, and .then the. valve I fullycloses .thehigh D, at the sametime openingportlillitor full flow-to the low duty meter, 'as's'hown in: Fig.

1. While the construction shown and descrlbed embodles a clnnge valve mechanism which provides lap of the flows on "both :.:ch=anges, namely, irQm' low duty: to high duty, and vice versa, and such an arrangement forms a specifiewfeature ofithe mven- :tion, it will be; understood zthatthebroader featuresof the invention, as definedibyithe claims, are not so limited,Fbutvmayrbewemvbodied :in (constructions in which wsueh'ri-lap et the .fiows does inot :oceur. By :thisarwrangement of the ip'ort 2 in relation-to lthe change-valve, lthere is no ifflilul'flfidf registration durin shifting from plow :duty to -11lghld l1ly registration, and vice versa;

The high duty 'meter has been shown as -:on the :inlet sSiCl6= ofzthe :low. 'dutyemeter. 1 -It is desirable in some cases, however that-the I hightduty aneter should be. placed on the 1 outlet side of the'low duty :1neter,.-a-nd it -wi11 a I l be understood ithatlthe invention is notto ;be limited \to the arrangement shown. JIt will he understood, also, that mthervmodifications 1 may .-be made, in :the detailed ieonstruction and arrangement of the parts shown 1 while retaining the zinvention' defined by the claims.

What is claimed -isl 1. Thecombination with a ilowiduty -imeter =for registering small fiowsandwa *high; 'dutyi .port, :and to ielosefthe remaining ipolrtion of the low duty portswhen thehighxdutymeter is in fullqoperationg on the ,ehange'; fromdow duty to -high duty operatiomwand to open J a '1 portion of the low duty ports for operation of the low duty meter before the high wduty meter is stopped, -lon--the ehange fromhigh duty to low duty.-operation. 2. The combination.withnneters forregis- ;tering'large audJ-small-.-fiows:, of change ivalve mechanism comprlsmg :a cylinder andaa pis- .ton valve thereln controlled-by Pressure,- and operating to change the How frommnemeter .to the, other, iSEtlCl cylinder ha-ving iports con- .trolled bysaid piston valve; ancharnangedto lcontlnue "the low duty meter linopzeration after the high-duty meter .is :breught'into operati'on and then \to stop-- Fthe, .low duty .meteiton fthe changerfirom lowduty-iitozhigh duty, and to ibringrthetlow duty =meteriinto operation? before the hig-h .zduty. meter @is stopped aon. the change fromn high; idntyto low duty and a dash pot acting to retard-the passage in saidpiston valve connected with i one of said low duty ports, a central passage 1n said piston valve, and aside passage connecting said annular and central passages, a

. spider carried by'said cylinder for limiting Y the upward movement of said piston valve, and a central plunger carried by said spider arranged to enter said central passage and forming with the central passage a dash pot acting to retard the piston valve and prevent shock on shifting the valve for change from low duty to high duty operation.

. l. The combination with a low duty meter for registering small flows and a high duty meter for registering large flows, of a pres sure controlled valve mechanism comprising a cylinder having a highduty port and a plurality of low duty ports and a piston valve movablewithin .said cylinder and arranged to partially close a portion of the low duty ports on partial opening of the high duty port and to close the remaining portion of the low duty ports when the high duty meter is in full operation on change from low duty to high duty operation, and to open a portion of the low duty ports for operation of the low duty meter before the high duty meter is stopped, on change from high duty to low duty operation, and a dash pot acting to retard the piston valvebefore all the low duty ports are closed on shifting from low duty to high duty registration.

5. Ina change-valve mechanism for compound meters, a cylinder having a plurality of low duty ports and a high duty port, a piston valve controlling said ports and con trolled by fluid pressure, and a clash pot acting to retard the piston valve before all the low duty ports are closed on shifting from low duty to high duty registration.

6. In a change-valve mechanism for compound meters, cylinder 12 having low duty ports 1 and 2 and high duty port 7, piston valve I controlling said ports and controlled by fluid pressure, there being an annular passage 4 in said piston valve controlling low duty port 1,a central passage 6 in said piston valve open at its upper end and a side passage 5 connecting said annular and central passages.

7 In a changevalve mechanism for compound meters, cylinder 12 having low duty ports 1 and 2 and high duty port 7, piston valve I controllingsaid ports and controlled by fluid pressure, there being an annular passage 4: in said piston valve connecting with low duty port 1, a central passage 6 in said piston valve open atitsupper end, and

a side passage 5 connecting said annular and central passages, and central plunger 16, havingpassage 8 thereinppositioned to enter said central passage 6 to form a dash 'pot.fl

- 3 18. In 'a'change valve mechanism for compound meters, a cylinder having a low duty port anda high duty port, a piston valve in said cylinder controlled by the fluid pres-i sure,there being an annularpassage in said piston valve connected with said low duty port, a central passage in said piston valve,

--anda side passage connecting said annular and central passages, a spider carried by said cylinder for limiting the upward movement of said piston valve and a central plunger carried by said spider arranged to enter said central passage and forming with the central passage, a dash pot acting to retard the piston valve and prevent shock on shifting the valve to change from low duty tohigh duty operation.

9. In a change valve mechanism for compound meters, a cylinder having a low duty port and a high duty port, a piston valve controlling said ports and controlled by fluid pressure, and a dash pot acting to retard the piston valve before the low duty port is closed on shifting from low duty to high duty registration. d

10. In a change valve mechanism for compound meters, a piston valve having one end exposed to the fluid pressure tending to move the piston valve for change from low duty to high .duty, and having a passage vvithin the piston valve closed to said end within the piston valve closed to said end and forming the inlet to the low duty meter,

the areas of said piston valve end and passage being arranged to secure a quick throw of the valve on change from low duty to high duty, and a plunger adapted to enter and" closesaid passage on change from low duty to high duty and open said passage before the close of the valve movement on change from high duty to low duty.

12. In a change valve mechanism for compound meters, cylinder 12 having low duty port 1 and high duty port 7, piston valve I controlling said ports and controlled by fluid pressure, there being an annularpassage 4: in said piston valve controlling said low duty port 1, a central passage 6 in said piston valve open at its upper end, and a side passage 5 connecting said annularrand central passages, and -central plunger 16 central passages. having passage 8-a11d positioned-to enter In a change valve mechanism foricomsaidrucentralpassage 6. pound meters cylinder 12 having 10w duty "In testimony :whereof- We have hereunto port 1 and high duty port -7, piston valve I set our hands in the presence oftwowsubcontrolling said ports and controlled by scribing witnesses.

' fluidpressure, there being an-annular -pas- CARL GEORGE DE LAVAL.

A sage-4 insaid piston valve-cooperating'with ROLAND HEI-MBECKER.

10W, duty port 1, a central passage-6 insaid Witnesses: 7 i g $10 piston valve open at its upper end, and a EDNAMOsER,

-- side passage 5 connecting said annular and POST.

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Washingtdmb. 0. 

